Anonymous proxy server. Supports http, https, socks. Can be used as a normal proxy or as a p2p anonymous proxy. Web based drag and drop access configuration. Works with windows, linux. IE, firefox, etc. Visit http://anonproxyserver.sf.net/ for more info.

Fast Artificial Neural Network Library is a free open source neural network library, which implements multilayer artificial neural networks in C with support for both fully connected and sparsely connected networks. Cross-platform execution in both fixed and floating point are supported. It includes a framework for easy handling of training data sets. It is easy to use, versatile, well documented, and fast. Bindings to more than 15 programming languages are available. An easy to read introduction article and a reference manual accompanies the library with examples and recommendations on how to use the library. Several graphical user interfaces are also available for the library.

PHP blog with all the common features (comments,track/pingbacks,RSS) plus cool extras:Click'n' blog admin,extensible event-driven plugin API,easy styling, multiuser,image management,static pregeneration and a nifty installer: unpack, open in browser!

Sarg - Squid Analysis Report Generator is a tool that allow you to view "where" your users are going to on the Internet. Sarg generate HTML reports, with informations about users, IP Addresses, bytes, sites and times.

BASE is the Basic Analysis and Security Engine. It is based on the code from the Analysis Console for Intrusion Databases (ACID) project. This application provides a web front-end to query and analyze the alerts coming from a SNORT IDS system.

A network access control (NAC) system featuring a captive-portal for registration and remediation, wired and wireless management, 802.1X support, isolation of devices, integration with IDS; it can be used to secure networks from small to large.
Source code is hosted here: https://github.com/inverse-inc/packetfence
Issue tracker tracker is hosted here: http://www.packetfence.org/bugs/